The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Chewing gum boosts your brain power.
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The largest cell in the human body is the female egg and the smallest is the male sperm.
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Your thumb is about the same size as your nose.
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After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Our eyes are always the same size from birth, but our nose and ears never stop growing.
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The human brain doesn't stop developing until about 25 years old.
102
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
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